As I said earlier, it is odd that RA-3361K appears as two airframes. One with 2-blade prop, in "J-3 config" and this cowling, and then again with a "sharper" cowl, as an "L-4", and 3-blades. I'm certain the Russians are "generous" with their allocation of the registration! Although J-3 was mention it was in relation to Piper, which this is not and in fact has some very subtle differences. Some Russian sites refer to it - but I haven't a clue what they say. As I mentioned, it is featured as a separate type by Janes.
Other pictures appear on airliners.net. Search the reg. You are right. It was at Zhukovsky in 2005, where I took took the image.
Enjoy your day. RR